Published: April 3, 2003

A woman convicted of killing a high school rival in 1991 lost her latest appeal when a federal judge ruled that she ''is not, and never will be, innocent of this crime.'' The judge, Anita Brody of Federal District Court in Philadelphia, rejected claims by Lisa Michelle Lambert that prosecutors and police officers in Lancaster County hid documents, destroyed evidence and lied on the witness stand. Ms. Lambert and a friend were convicted of first-degree murder for slitting the throat of Laurie Show, 16. Prosecutors said Ms. Lambert thought Ms. Show was romantically involved with her boyfriend.